NAICS 321918: Other Millwork
This U.S. industry comprises establishments primarily engaged in manufacturing millwork (except wood windows, wood doors, and cut stock).

Illustrative Examples:

Clear and finger joint wood moldings manufacturing
Decorative wood moldings (e.g., base, chair rail, crown, shoe) manufacturing
Ornamental woodwork (e.g., cornices, mantel) manufacturing 
Planing mills, millwork 
Stairwork (e.g., newel posts, railings, stairs, staircases), wood, manufacturing
Wood flooring manufacturing
Wood shutters manufacturing

ExioML sector: Wood and products of wood and cork (except furniture); articles of straw and plaiting materials (20)
Region: US | Year: 2022
Sector value added: 5397.98283662 M EUR | Employment: 349.807915369 thousand persons
Sector GHG emissions: 10257834812.5 kg CO2 eq | Energy carrier net total: 304288.389478 TJ | Carbon intensity: 1.9003088974108417

Company: Ply Gem Holdings Inc
Ply Gem Holdings, Inc. operates as a holding company. The Company, through its subsidiaries, manufactures exterior building products such as vinyl windows and doors, composite fencing, steel siding, railing, stone veneer, and shutters. Ply Gem Holdings serves customers throughout the United States.